By Andrew A. Smith Scripps Howard News Service   May 14, 2013 -- When a movie makes nearly a billion dollars worldwide in a week, and has the second highest opening weekend in U.S. history, it’s worth a second column. So even though I wrote about The Mandarin in Iron Man 3 last week, I’m still getting questions about Tony Stark and his armored alter ego. Let’s answer a few:   Q: If Iron Man 3 had…